Ordinance approving a Development Agreement between the City and County of San Francisco and Seawall Lot 337 Associates, LLC, for 28 acres of real property known as Seawall Lot 337, located east of Third Street between China Basin Channel and Mission Rock Street, China Basin Park and the portion of Terry A. Francois Boulevard abutting the park, Pier 48, the marginal wharf between Pier 48 and Pier 50, and Parcel P20; for the proposed Mission Rock Mixed-Use Project; waiving certain provisions of the Administrative Code, Planning Code, and Subdivision Code; and adopting findings under the California Environmental Quality Act, public trust findings, and findings of consistency with the General Plan, and the eight priority policies of Planning Code, Section 101.1(b).